Creanga AA, et al. – An observational study is done to update national population–level pregnancy–related mortality estimates and inspect qualities and causes of pregnancy–related deaths in the United States amid 2011–2013. The pregnancy–related mortality ratio and the distribution of the main causes of pregnancy–related mortality have been relatively stable in recent years.

Methods

• For this research, they designed an observational study.
• This study was conducted by using population–based information from the Pregnancy Mortality Surveillance System to calculate pregnancy–related mortality ratios by year, age group, and race–ethnicity groups.
• They investigated 10 cause–of–death categories by pregnancy outcome amid 2011–2013 and compared their distribution with those in their earlier reports since 1987.

Results

• The found the 2011–2013 pregnancy–related mortality ratio was 17.0 deaths per 100,000 live births.
• Pregnancy–related mortality ratios increased with maternal age, and racial–ethnic disparities persisted with non–Hispanic black women having a 3.4 times higher mortality ratio than non–Hispanic white women.
• Among causes of pregnancy–related deaths, the following groups contributed more than 10%: cardiovascular conditions ranked first (15.5%) followed by other medical conditions often reflecting pre–existing illnesses (14.5%), infection (12.7%), hemorrhage (11.4%), and cardiomyopathy (11.0%).
• Relative to the most recent report of Pregnancy Mortality Surveillance System data for 2006–2010, the distribution of cause–of–death categories did not change considerably.
• In any case, compared with serial reports before 2006–2010, the contribution of hemorrhage, hypertensive disorders of pregnancy, and anesthesia complications declined, whereas that of cardiovascular and other medical conditions increased (population–level percentage comparison).